hadoop部署安装（二）hdfs

2.1 解压Hadop包

2.2 配置hadoop-env.sh文件

[root@master ~]# cd /usr/local

[root@master local]# tar xf hadoop-3.2.0.tar.gz

[root@master local]# mv hadoop-3.2.0 hadoop

[root@master local]# cd hadoop

[root@master hadoop]# vim etc/hadoop/hadoop-env.sh

修改：

export JAVA_HOME=/usr/local/jdk

export HDFS_NAMENODE_USER=root

export HDFS_DATANODE_USER=root

export HDFS_SECONDARYNAMENODE_USER=root

export YARN_RESOURCEMANAGER_USER=root

export HADOOP_SECURE_DN_USER=yarn

export YARN_NODEMANAGER_USER=root

2.3 配置core-site.xml文件

[root@master hadoop]# vim etc/hadoop/core-site.xml

<configuration>

<property>

<name>fs.defaultFS</name>

<value>hdfs://master:9820</value>

</property>

<property>

<name>hadoop.tmp.dir</name>

<value>file:///usr/local/hadoop/tmp</value>

</property>

<property>

<name>hadoop.proxyuser.root.hosts</name>

<value>*</value>

</property>

<property>

<name>hadoop.proxyuser.root.groups</name>

<value>*</value>

</property>

</configuration>

2.4 配置hdfs-site.xml文件

[root@master hadoop]# vim etc/hadoop/hdfs-site.xml

<configuration>

<property>

<name>dfs.namenode.name.dir</name>

<value>file:/usr/local/hadoop/dfs/name</value>

</property>

<property>

<name>dfs.datanode.data.dir</name>

<value>file:/usr/local/hadoop/dfs/data</value>

</property>

<property>

<name>dfs.replication</name>

<value>1</value>

</property>

<property>

<name>dfs.namenode.secondary.http-address</name>

<value>master:9868</value>

</property>

<property>

<name>dfs.permissions</name>

<value>false</value>

</property>

</configuration>

2.5 配置slave文件

[root@master hadoop]# vim etc/hadoop/workers

添加：

master

slave1

slave2

2.6 将master节点配置同步其他主机

scp -rp /usr/local/hadoop/ slave1:/usr/local/

scp -rp /usr/local/hadoop/ slave2:/usr/local/

scp -rp /usr/local/hadoop/ slave3:/usr/local/

2.7 修改环境配置文件

vim /etc/profile

添加：

#Hadoop Environment Variables

export HADOOP_HOME=/usr/local/hadoop

export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop

export PATH=$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATH

export LD_LIBRARY_PATH=$HADOOP_HOME/lib/native

#mysql

export PATH=$PATH:/usr/local/mysql-5.6/bin

#hive

export HIVE_HOME=/usr/local/hive

export PATH=$PATH:$HIVE_HOME/bin

#spark

export SPARK_HOME=/usr/local/spark

export PATH=${SPARK_HOME}/bin:$PATH

export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native

export JAVA_LIBRARY_PATH=$HADOOP_HOME/lib/native

#zookeeper

export PATH=$PATH:/usr/local/zookeeper/bin

#scala

export SCALA_HOME=/usr/local/scala

export PATH=${SCALA_HOME}/bin:$PATH

[root@master ~]# scp -rp /etc/profile slave1:/etc/profile

[root@master ~]# scp -rp /etc/profile slave2:/etc/profile

2.8 格式化hdfs文件系统

[root@master ~]# hdfs namenode -format

格式化hdfs的namenode节点，产生定义的hdfs_tmp目录

查看是否生成fsimage文件，验证hdfs格式化是否成功

2.9 启动hadoop集群

[root@master ~]# start-dfs.sh

2.10 验证hadoop集群

2.11 关闭hadoop集群

[root@master ~]# stop-dfs.sh

注意yarn服务需要运行zookeeper。